Boiler-leveler



(No Model.) 7

O. O. KRAVIK.

BOILER LEVELER No. 442,777. Patented Dec. 16. 1890.

INVENTOH:

w ATTORNEYS I WITNESSES.

,UNITED STATES OLE O. KRAVIK, OF ST.

PATENT OFFICE.

CARL, NORTH DAKOTA.

BOILER-LEVELER.

SPECIFICATION forming part of Letters Patent No. 442,777, dated December16, 1890.

Application filed April 17, 1890- Serial No. 348,341. (No model.)

To all whom it may concern:

Be it known that I, OLE O. KRAVIK, of St. Carl, in the county of Wardand State of North Dakota, have invented a new and ImprovedBoiler-Leveler, of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a new and improvedboiler-leveler which is simple and durable in construction, easilymanipulated, and specially designed for portable boilers to raise andlower their front ends when going up or down a grade without interferingwith the turning of the front Wheels.

The invention consists in certain parts and details and combinations ofthe same, as will be described hereinafter, and then pointed out in theclaims.

Reference is to be had to the accompanying drawings, forming part of thespecification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improvement as applied with parts insection. Fig. 2 is an enlarged transverse section of the improvement,and Fig. 3 is an inverted plan view of part of the axle.

The portable engine A, 011 which the improvement is applied, is providedwith the usual boiler B, to the front end of which is secured at theunder side a plate 0, in which is pivoted the upper end of a bolt D,screwing in a bushing E, fitted to turn loosely in a block F, carryingthe axle G, on which the front wheels H are mounted. The Vertical axisof the screw D is in line with the center line of the axle, the latterbeing bent in its middle, so as to pass around the bushing E,

as is plainly shown in the drawings.

On the upper end of the bushing E is formed a flange E, resting on thetop of the block F, and near the lower end of the said bushing on theunder side of the block F is fitted loosely the reach-rod I, connectedin the usual manner with the boiler B, carrying the rear wheels J On thelower end of the bushing E is socured a bevel gear-wheel K, meshing intoa bevel gear=wheel L, secured at one end on a shaft N, mounted to turnin suitable bearings N and N of which the bearing N is held on thereach-rod I and the bearings N on the rear end of the boiler, as isplainly shown in Fig. l. The rear end of the shaft N is provided with ahand-wheel 0, arranged within convenient reach of the operator followingthe boiler. The shaft N is also preferably provided with a universaljoint N so as to conveniently arrange the front end of the shaft betweenthe wheel and boiler. hen the hand-wheel O is turned, the shaft Nreceives a like motion, and by the gearwheels L and K the bushing E isturned in the block F, so that the screw D screws up or down in the saidbushing, whereby the front end of the boiler 13 is raised or lowered,according to the direction in which the hand-wheel O is turned. Thuswhen the portable boiler Apasses up a grade the operator turns thehand-wheel 0 so as to turn the bushing E in such a direction as to screwthe rod D downward, so that the boiler 13 stands level on the grade.lVhen the portable boiler is passing down a grade, the operator turnsthe hand-wheel O in an opposite direction,so that the screw-rod D screwsupward and raises the front end of the boiler B until the latter standslevel on the downgrade.

In order to avoid wearing between the gearwheel K and the fulcrum end ofthe reachrod I, a washer P is preferably placed between the two, as isplainly shown in Fig. 2.

It will be seen that the axle is free to swing at all times withoutinterfering with the mechanism for raising or lowering the boiler, sothat in going up or down a grade on a turn the leveling parts are notaffected.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with the screw D, pivoted at its upper end to theattaching-plate O, of the internally-threaded bushing E upon the screwand having a gear-wheel on its lower end, and the axle-block F, in whichturns the said bushing, substantially as set set forth.

2. The combination, with the boiler having front and rearsupporting-wheels, of the plate O, secured to the lower side of thefront end of the boiler, the vertical screw pivoted at its upper end tosaid plate, the internallythreaded bushing E upon the screw and having agear on its lower end, the block F,hav- I ing, and the operating-rodhaving a pinion ing a vertical opening in which turns the meshing intogear K, substantially as set bushing E, the said block having a recessforth.

across its lower face curved around the for- OLE O. KRAVIK. 5 ward sideof the said opening to receive the Vitnesses:

front axle, the reach-trod I, having a forward JOHN O. REBRUD,

end opening, through which passes said bush- JAMES JOHNSON.

